Thomas w



No Model.) T. W. PRITGHARD.

SHADE 0R GLOBE HOLDER.

No. 449,171. Patented Mar. 31, 1891.

lllllmmmlmim all-l lll llllllllll 0 QM Q Z A v WW THOMAS \V. PRITOHARD,OF \VATERBURY, CONNECTICUT, ASSIGNOR TO THE "terns anion.

STEELE & JOHNSON MANUFACTURING COMPANY, OF SAME'PLACE.

SHADE OR GLOBE HOLDER.

SPECIFICATION forming part of Letters Patent No. 449,171, dated March31, 1891.

Application filet. October 25, 1890. Serial No. 369,304. (No model.)

To aZZ whom it may concern.-

Be it known that I, THOMAS W. PRITCHARD, a citizen of the United States,residing at WVaterbury, in the county of New Haven and State ofConnecticut, have invented certain new and useful Improvements in Shadeor Globe Holders; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothcrs skilled in the art to which it appertains to make and use thesame.

My invention is adapted to all classes of fixtures in which a shade orglobe is engaged by a suitable holding-ring and the ring and shade aresecured to a fixture by a elaspingring, the most important use being inconnection with incandescent electric lights; and my invention has forits object to produce a stronger and more rigid construction withoutincreasing the cost of production.

IVith this end in view I have devised the simple and novel constructionwhich I will now describe, referring by numerals t0 the accompanyingdrawings, forming part of this specification, in which Figure 1 is aplan view of the blank which constitutes the clasping-ring and the arms,and Figs. 2 and 3 are respectively a side elevation and an inverted planview of the holder complete.

Myimproved shade or globe holder embodies the three essential elementscommonly found in this class of holdersto wit, a shade or globe ringdenoted by 1, a clasping-ring denoted by 2, and arms 3, which connectthe shade or globe ring to the clasping-ring. It will of course beapparent that in use the strain upon the holder comes almost entirely atthe points atwhich the arms are connected to the clasping-ring. Y

My present construction gives great strength at just the point where itis required with but a single thickness of metal and without riveting atthat point. I-Ieretofore it has been common to rivet one or more of thearms to the clasping-ring. This has been found objectionable for tworeasons. In the first place when the holders give out it is almostinvariably. by a loosening of the rivets at this point, and in thesecond place the riveting of the arms to the clasping-ring gives to theholder at clumsy and awkward appearance, which is objectionable to thetrade, and which it is greatly desired to avoid. Still anotherconsideration, which is by no means unimportant to the manufacturer, isthat the riveting together of parts increases the amount of timeconsumed in assembling, and thereby adds considerably to the cost ofproduction. In another form the arms have been made integral with theshade or globe ring and provided with an attaching neck or socket tohold an independent spring clasping-ring. The special object of thisconstruction is to make the holder lighter, stronger, more graceful, andat the same time to effect an important saving in the cost ofmanufacture.

The objects to be attained are, first, strength and rigidity; second, alight and graceful appearance, and, third, a construction that willmatch up fairly well in blanking out, so as to make as little scrap aspossible.

In my improved holder I use but two arms to connect the shade-ring withthe clampingring, (another arm may of course be used, if preferred,)both arms being formed integral with the ring itself, so that in use thestrain at the point of connection with the claspingring is upon the armstransversely,so that it is practically impossible for them to spring outof place to any appreciable extent. The shade-ring is made angular incross-section, as usual, and is provided with lugs 4 to receive screws5, which hold the shade or globe in place. I also preferably formenlargements 6 directly opposite each other on the upper side of thering for the purpose of strengthening the attachment of the arms. Theclasping-ring and arms I blank out in a single piece from sheet metal,the form of the blank being clearly shown in Fig. 1. The portion to formthe ring is a straight strip, from which the arms extend. At the ends ofthe blank enlargements 7 are formed having holes, one of which isthreaded to receive a claspingscrew 8, said screw passing freely throughthe other hole. At the ends of the arms are enlargements 9, also havingholes. In blanking out the blanks are of course matched up, so that theamount of scrap is reduced to the too minimum. After blanking out therings and arms are curved to the required shape and enlargements 7 and 9are bent outward at the required angle. In assembling, the shadering andthe arms are rigidly secured together by rivets 10, passing throughenlargemen ts 6 and 9.

The operation of my novel shade or globe 1. A shade or globe holderconsisting of a suitable shade or globe ring and a elaspingring and armsblanked out in a single piece, I-

the arms being riveted to the shade-ring and the clasping-ring providedwith enlargements at its ends, and a clasping screw passing through oneenlargement and engaging the ot l1cr,by which the holder is secured inplace.

2. A shade or globe holder consisting of a suitable ring, to which theshade or globe is secured, and which is provided with enlargements 0,and a clasping-ring and arms 3, blanked out in a single piece, theclaspingring having at its ends enlargements 7, one of which is threadedto receive the claspingscrew, and the arms having at their lower endsenlargements 9,bent to correspond with enlargements 0, the arms andshade-ring be ing rigidlysecured together by rivets passing through theenlargements.

In testimony whereof I affix my signature in presence of two witnesses.

THOMAS PRITCIIARD.

Vitnesscs:

C. H. BRoNsoN, B. L. (3013:.

